In summary, we provided evidence that a dip-coating configuration with two entrained films is feasible using existing liquids and we developed the framework to understand and predict the corresponding entrained thicknesses.
The present theory of plate coating could also be extended to fiber coating provided the curvatures of the static menisci, near the fiber and in perfect wetting conditions, are modified to account for the second principal radius of curvature contributing primarily to the capillary suction mechanism [1]}.
In the limit of a fiber radius \(b \ll \ell _c\) , the adaptation is straightforward and consists in replacing \(\sqrt{2}/ \ell _c\)  by \(1/b\)  in the expressions for the two static menisci.
